Type-writing machine.



Patented Mar. 18, 1913',

J. K. LUX.

TYPE WRITNG MACHINE. APPLICATION FILED sBPT.9,191o.

Fig.

Losenoa.

UNITED STATES PATENT OFFICE.

JULILTS K. LUX, OF JERSEY CITY, JERSEY, ASSIGNOR T UNDERWOOD TYPE-WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION 0F DELAWARE.

Specification of Letters Patent.

TYPE-WRITING MACHINE.

. Writing Ma ".iines, of Which the following rio is a speciicai. on.

The present invention relates to type-v Writing machines inWhich theplaten ro-ll is adjustable, independently of the 'linespacing Wheel, bymeans of a hand Wheel or other device suitably connected to the platen.

The present invention relates tO- machines in which a train of gearingcon-.

nects the platen to /the line-space Wheel, which train is o erated byahand Wheel, to effect ne a ju'stments fof the platen while theline-space Wheel remains stationary. V

l provide a simple 'means for normally locking the line-space Wheel tothe platen and unlocking the same when adjustment of the .platen isdesired, the line-space Wheel being positively and automatically lockedto the feed Wheel after each adjustment. 1 provide a locking means ofthis character, which in connecting the platen to the line space Wheelafter the adjustment, does not disturb the adjustment, and is positivein action, and renders impossible that play or loose movement betweenthe'parts which has heretofore often impaired lthe. alinement of theprinting.

Another object of the invention is to' so simplify the mechanism that noadjusting device is necessary other than the hand Wheel commonly carriedby the platen shaft.

Other features of the invention are found .in the mechanism. by means ofwhich the hand Wheel and the line space Wheel operate together to turnthel platen at one speed for the ordinary line-spacing movement, and bymeans of which the hand wheel is operated While the linespace Wheelremains stationary, to turn theplaten at a slower speed )for purposes ofadjustment.Y

in the accompanying drawings, Figure 1 is a top plan View of the platenand attached parts for effecting its line spacing and adjustment, theplaten being shown mounted in frame members of the machine. Fig. 2 is aperspective of the 'platen-and attached parts, certain ofthe parts beingbroken for clearer illustration of the struc:

.the slots 19.

ture. Fig. 3'; is a view taken diametrically through the feeding andadjusting mechanism on the platen shaft,iand through a por-- tion of theend of the platen,the parts bemg shown in normal position. -F ig. et isa view similar to Fig. 8 except that the ad- Patemeu Mar. 18,1913.-

justing Wheel is shown in side view, and

the parts in position to permit of adjustment of the platenindependently of the line space wheeL Fig. 5 is a face View of thescroll or cam device and intermeshing toothed wheel for adjusting theplaten. Fig. 6 is a side view of the scroll, the gear by which it isdriven,` and a portion, in cross section, of the toothed Wheel.

Referring f to the drawings, the platen 1 is shown loosely mounted onshaft 2 Which has bearing at either end in frame members 3 and 4 of themachine. Also loosely mounted on'the shaft 2 is the line-spacing or feedwheel 5 having teeth 6 to be engaged and driven by a-dog 7, so that theWheel may be rotated one ormore steps in the usual manner.

A suitable spring normally holds dog or paivl carryiing member 8 insuehposition that the dog 7 is out of engagement with the teeth of theline space wheel. A detent 10, pressed against the wheel 7 by a spring11, holds the Wheel in set position against accidental displacement.Fast to the shaft or axle 2 are the .hand wheels 12 and 13, one at eachend of the shaft.

The hand Wheel '13 has aflange 14 which has a toothed line space wheel 5cazrries a fla-nge 18 and tivo slots or heya/aye 19, which are cutparallel to the shaft and receive the bits,

locks or ,teeth 17 of the disk 16, so that normally the 'disk 16 andyline space Wheel must t-urn together on the lshaft 2 when either isturned. The disk 16 is free to have a certain longitudinal movement onthe shaft 2,

and the bits 17 have similar movement-in A coil spring 2O which bears atone end against the face of the line-space Wheel and at the other endagainst the face of the dish, tends to force the disk toward lthe handy"Wheel 13 in such manner that vthe bits 17 on the dislc engage thetoothed medi# ber-15. The bits are of such, Size that,

'the pinion 25; the axle Figs. of the ,35s

wheel is normally locked to the hand whatever the position of the diskon the shaft, the detents are never out of the slots or keyways 19 ofthe line space wheel. lVhen therefore the bits 17are forced by thespring 20 into engagement with the toothed flange of the hand4 wh'eehthe latter iskeyed or locked to the line space wheel, and both xnust-4rotateI together. This is lthe normal relation, of the parts, and is asshown in Figs. 1 and 3.

The feed wheel is connected to the platen in the -following manner.Loosely mounted [on the shaft 2 is a sleeve 21- having fast thereto 'adisk or wheel 22. The sleeve 21 is fastened to the line space wheel 5 bymeans of a key 23, so that both must move together. On one faceof thedisk 22 is a ring of teeth 24 concentric with the shaft 2. Fast to theshaft 2 is a pinion 25. Fast to an eccentric stud or shaft 26 looselymounted to rotate in the end of the platen, at a distance from` the axle2, is a pinion 27, which interineshes with `and is rotatable by 2 beingrevo-luble independently of the platen. Also fixed on the stud 26 is adisk or plate 28 which carries on its Outer face a spiral cam or convolute scroll 29. A spring 30 bearing on the inner end of the stud 26holds the cam in yielding engagement with the teeth 24 on the wheel 22.The cross section of the cam resembles a gear. tooth, and, as shown in 5and 6, is such as to permit the turns spiral to enter between adjacentteeth 24 and be engaged by the latter. The spiral describes an arc ofmore than 360 degrees, and its overlapping ends are `spaced sub-`stantially the diameter of one of the teeth 24. l/Vhen therefore thespiral is turned in its bearing in a manner hereafter to be described,some portion of it is always engaged on both sides by teeth 24, and ifthe platen be free to turn on the shaft 2, the cam, by engagingsuccessive teeth 24, asthe stud 26 rotates, will move around the circleof the teeth 24 and carry with it the platen. The

yielding engagement ofthe cam with the teeth as provided by the spring30 permits of' aprompt take-up and movement of the cam to compensate forany wear `or lack of.

perfection of the engaging parts.

It y has been statedl that the :line-space 13, and consequently to theshaf 2, by means of the bits 17. This is the iosition of the vparts forturningtthe platen predeterminedspacing distances regulated by the teeth6 of t-he line space wheel. -If in this setting, the linespace wheel 5is moved, either by the hand wheel or by the rod 8, the following parts,which are thjen locked together, all have the same angular movement,towit: the line space Wheel 5, the

'v hand wheel 13, the shaft 2, the toothed wheel 22, and the pinion 25.As shown in Fig. 5,

wheel' the arc of the circle of the teeth 24, and the spiral 29intersect substantially at right angles. `The movement of theivheel 22therefore causes the teeth 24 to bear directly against the cam, so thatthe cam is carried bodily by the wheel a distance according to thenumber of teeth 6 the feed wheel is advanced. Since the wheel 22, thepinion 25, and the cam are thus turned together the same angulardistance with the shaft- 2, there is no rotation of' the stud 26 orspiral in its bearing in the platen. The platen is Atherefore turned asa unit with the line space wheel when the latter is locked by the bitsA17 to the handwheel and shaft. This occurs when it is desired to movethe platen backward or forward the regular spacing distances.

F or purposes of proper alinement or for other reasons, it is often,however, necessary to move the platen a small distance only, and in suchevent aline and exact adjustment of the platen independently of the linespace wheel is desirable. To this end the platen is disconnected fromthe line space wheel. The bits 17 which are normally in engagement withthe line-space wheel are removed from the hand wheel by a longitudinalmovement of the disk 16 on the shaft 2 against the action of the spring20. This movement of the disk 16 is effected by means of a-ring or plate31 which lies between the disk 16 and the hand wheel 13 and which iscarried by pins 32. The pinsI 32 project through the hand wheel, andhave a sliding bearing in the latter. At their outer ends they carry aplate 33. By pressing the plate 33 toward the hand wheel, the disk 31 ismade to move the disk 16 to the position shown in Fig. 4, where, it willbe noted, the bits 17 no longer engage the serrated edge of the handwheel. Then the pressure is removed from the plate 33, the spring 20returns the parts to'F ig. 3 position. If, while the disk 16 and bits 17are in the Fig. 4 position, either hand wheel 12 or 13 is turned, theshaft is of course turned and with it the pinion 25 which is fast to theshaft. Since the pinion 27 intermeshes with the pinion 25, the stud 26and spiral cam 29 are rotated. AAt this time the line space wheel 5 'isheld stationary by the spring pawl 10 so that the sleeve 21 and toothedwheel 22 are also stationary. The rotation of the scroll thereforecauses the spiral-to en age successively the teeth 24, and the scrolplate 28 and attached parts to move or creep around the then stationaryplate 22, and the shaft 2; tie revolution ofthe scroll 29, a distanceequal to the distance between two adjacent teeth 24; The platen byreason of the stud 26 which cnnectsitto the scroll, turns as the scrollpicks up Atooth after tooth on the plate 22. A large movement of thehand parts advancing on each complete shaft 2.

ment has been effected, the plate 33 is released, and the spring 20thereupon forces the bits 17 again into engagement with the hand Wheelto connect the handwvheel to the Thebits 17 and the serrations orl teeth15 on the hand lWheel are sufficiently line to permit the platen to belocked to the line space Wheel in practically Athe precise adjustmentforwhich the platen has been set.

It will be noted that the saine hand Wheel 13 may be used both for theordinary linespacing movement of the platen with the line space Wheel,and for the adjustment of the platen independentlyof the line spacewheel.

It is particularly to be noted that the conneetion between the linespace Wheel and the hand Wheel 1s positive and 1s effective,

lafter any desired adjustment of the platen,

to hold the wheels in proper relation. No play or free movement of tl"as might cause defects in a `ement of letwill be observed thatin thisform of the invention a crown-toothed wheel is engaged with a spiralcam, so that when the spiral cam is tn'ned, itcauses the crown wheel tomove one tooth for each complete revolution of the spiral cam. Thespiral cam also may be capable of movement 1n t-he`d1rect1on of itsaxis, and a spring may alwaysurge the cam into engagement with the crowntoothed l. ment and perpetual take up for Wear and lack of perfection inthe parts. The cam is driven by a gear fixed to the axle of thecylinder; both platen knobs or handles being xed to the aXle. The cam isset at an incline to the crown Wheel 24, to permit it to clear thelatter at the right-hand side of the ram at Fig. 5.A A latch-unites anddisunites the platen knobs from the line spacing Wheel. i

Variations may be resorted to Within the scope of the invention, andportions ofthe improvements may be used Without others.

Having thus described my invention, l claim: Y v

l. In a typewri-ti-ng machine, a platen roll.l a shaft on which theplaten is mounted, a line spacing Wheel loosely mounted on said shaftfor turning the platen, means for holding the line space wheel atuniformly spaced points of its path of rotation, a hand Wheel fast tosaid shaft for' turning the'platen, and

a latch or device loosely mounted`on saidv shaft and movablelongitudinally thereon for positively locking the line space Wheelplaten, such to the hand wheel, and for disconnecting thc line` spaceWheel from the hand Wheel, so that the hand wheel may be actuated withthe line space wheel to turn the platen or may be actuated with theplaten independently of the line space wheel; said locking device beingnormally in engagement With both the line space wheel and the hand Wheelbut being disengageable lfrom the hand Wheel by longitudinal movement onthe shaft. l l t V 2. In a typewriting machine. a platen roll, a shafton whichthe platen is mounted, a. line spacing wheel'loosely mounted onsaid shaft for turning the platen, means for holding the line spacewheel at uniformly spaced points of its path of rotation, a hand-Wheelfast to said shaft for turning the platen, and a latch or device looselymounted on sai-d shaft and movable longitudinally thereon for4positively locking the line space Wheel to the hand `fh-eel, and fordisconnecting the line space Wheel from the hand wheel, so that the handWheel may be actuated With the line space wheel to turn the platen ormay be actuated With the platen independently of the line space wheel;said locking device being normally in engagement withA both the linespace Wheel and the hand wheel but being disengageable from the handWheel by longitudinalmovement on the shaft, and a spring forautomaticallymoving the locking deviceto normal position.

3. In a typewriting mach/lne, a platen roll, a shaft on which the platenis mounted, a line spacing Wheel loosely mounted on said shaft4 forturning the platen, means for holding the line space Wheel at uniformlyspaced points of its path of rotation, a hand Wheel fast to said shaftfor turning the platen, and a latch or device loosely mounted on saidshaft and movable longitudinally thereon for positively locking the linespace wheel to the hand Wheel, and for disconnectingthe -line spaceWheel from the hand wheehso that the hand Wheel may be actuated with theline space Wheel to turn the platen or may be actuated with the platenindependently of the line space wheel; said locking device beingnormally in lengagement with both the line space Wheel and the handWheel but being disengageable from the hand n heel by longitudinalmovement on the shaft, and a spring for automatically'moving the'locking device to normal position, and means for moving said lockingdevice against the action of said spring to release the hand Wheel fromthe line space Wheel.

it. In typevvriting machine,a platen roll,

a line-spacing Wheel for turning the platen," l

means for holding the line space Wheel at uniformly spaced points of itspath of rotation, a hand-Wheel for turning the platen, a shaft on whichthe` line spaceA Wheel and hand Wheel are mounted, a blade in the planeof the axis o f the shaft and mounted to have movement longitudinally ofthe shaft, the line space wheel having a slot into which the bladeextends, and the hand Wheel having a serrated .edge to receive the bladein any position of the hand wheel, andmeans for"mo`ving the blade intoand out of engagement-With the hand Wheel, so that the line. space Wheelandhand Wheel may be connected and disconnected to move together withthe platen or tov move the platen inde pendently of the line spacewheel.

5. In a typ Writing machine, a platen roll, a shaft on vv ich the rollis loosely mounted, means for driving the' platen from said shaft, aline spacing` wheel loosely mounted Y on-said shaft, a hand wheel fastto said shaft, and means for positively connecting the line space Wheelto the hand Wheelfin any position of the latter and for releasingI theline space wheel from the hand wheel to permit the platen to be turnedindependently of the line spacewheel.

6. In a typewriting machine, a platen roll, a' shaft on which the rollis loosely mounted, means for driving the platen from said shaft, a linespacing' wheel lmely mounted on said shaft, a hand Wheel v'fast to saidshaft,`and means for positively connecting the line space Wheel to thehand Wheel, said connecting means being permanently engaged by the linespace Wheel, and the hand Wheel having means whereby it may be engagedin any position by said connecting means.

7. In a typevvriting machine, a platen roll, a shaft on Which the rollis loosely mounted, a gear fast to the shaft, a toothed element loose onthe shaft, a gear carried by the platen at a distance from the shaft andcooperating on the one hand with the gear on the shaft and on vthe otherhand with the toothed element; so that when the toothed element isstationary and the gear on the platen `is revolved from the shaft, thetoothed gear, by engagement with the toothed element, is caused to movewith the platen around the shaft, and when the toothed element isrevolved with the shaft,

1 it carries With it the gear with which it cooperates and the platen onwhich such gear 1s mounted; aline-spaeingwheel carried by said toothedelement, means for holding said Wheel stationary at uniformly spacedpoints of its path of revolution, and means for 'positively locking `theline space'ivheel to the shaft and for disconnecting it from the shaftso that it may be'held stationary.

' .8. In a typewriting machine, a platen roll,

a shaft on which the roll is loosely mounted,

a pinion fast to the shaft, a Wheel loose on the shaft having teetharranged around the same concentric with the shaft,'a pinion caryried bythe platen at a distance from the 5l shaft meshing with the pinion onthe shaftf a spiral-camfastto the platen pinion, said .scroll pinion.

cam cooperating with the teeth of the toothed Wheel, so that when thetoothed wheel is stationary and the cam revolved; the cam creeps aroundthe toothed element and carries with it the platen; and when the toothedWheel is revolved, it carries with it the cam and platen; a line-spacingwheel carried by the toothed Wheel, means for holding the lineA spacewheel stationary at uniformly spaced points of its path of rotation, andmeans for positively connecting the line space Wheel to the shaft andfor disconnect-- ing it from the shaft.

9. In a typewriting machine, a platen roll, a shaft on which the roll isloosely mounted, a pinion fast to the shaft, a wheel loose on the shafthaving teeth arranged around the same concentric with the shaft, apinion carried by the platen at a distance from the shaft, meshing Withthe pinion on` the shaft,

a spiral cam fast to the platen pinion, a spring for holding the caminyielding engagement with the teeth of the toothed wheel` aline-spacing wheel connected to the toothed wheel, means for holding theline space Wheel stationary at uniformly spaced positions f its path ofmovement, and means for connecting the line space wheel to the shaft andfor disconnecting it from the shaft.

l0. ln a typewriting machine, a platen roll, a line-spacing wheel forturning the platen,.a shaft on which the line space wheel is looselymounted, a hand wheel fast to said shaft for adjusting the platen, adriving connection from the line space wheel to the* platen, and adriving connection from the hand wheel to the platen, lneansmounted onthe shaft between the hand Wheel and line space Wheel for normallylocking the hand wheel to the line space wheel but movablelongitudinally of the shaft away from the hand wheel to disconnect thewheels,a

spring for holding the locking device in.'

normal position and for returning the same to norimilposition, a slidemounted to haveb bearing in the hand wheel and movable therein in thedirection of the shaft, and a plate on the inner end A.of said slide,against which plate the spring holds the locking device, so that whenthe plate is moved against the action ofthe spring, the locking deviceis moved thereby to disconnect the Wheels.

1l. The combination with a platen and a loose aXle therefor having a'finger wheel', of a line-space wheel, a crown gear united to said linespace wheel, a scroll journaled eccentrically on the platen and inclinedto the platen shaft and engaging said gear, a. pinion being provided onsaid scroll, and a. pinion on the platen shaft to mesh with the l2. Thecombination with a platen and a loese axle therefor having a fingerwheel, of a line-space Wheel,.a 'crown gear unitedV to insegna platenand the line space wheel, comprising i @opten of this patent maybeobtained for a ear and .aconvolute scroll mounted eccentrically of thegear, the scroll being inclined to the gear to clear the same wherenecessary.

14. The combination with a-platen anda line-space wheel, of means forproducing a relative creeping movement between the platen and theline-space wheel', comprising a gear and a convolute scroll mountedeccentrically of the gear, the scroll being inclined to the gear toclear the same where necessary, and a spring to press the scroll intoengagement with the gear.

15. The combination with a platen anda line-space wheel relativelyrevoluble, of a loose sha-ft or axle for, the platen, a finger wheel onsaid shaft', a notched Wheel, a tooth to engage the saine, the notchedwheel and tooth releasably connecting said axle to said line-,spacewheel, and a train of movementreducing gearing between said axle and theplaten, whereby the platen may be positively reconnected to theline-'space wheel at intervals much more minute than the inter vals atwhich the notches are formed in said wheel. f A

'16. The combination 'with a `platen and a loose axle therefor having afinger wheel, of a line'space wheel, a crown gear united to said linespace wheel, a scroll journaled eccentrically on the platen andiinclined to the platen shaft and engaging said gear, a pinionbeingrprovided on said scroll, a pinion on the platen shat to mesh withthe scrollpinion, a notched wheel, and a tooth to engage the same, vtoconnect the linespace wheel releasably to said axle.

17. The combination with al platen and a line-sp ce'4 wheel, of aconnecting train between hem, comprising a gear, a .convolute scrollengaging said gear, and means for rotating said scroll to effectrelative rotation-between the platen and line-spade wheel.

18. The combination with a platen and 'a line-'space wheel, of aconnecting train between them comprising a gear, a convolute lscrollengaging said gear, and a shaft or axle having a finger wheel foroperating said scroll. l

19. The combination with a'platen and a 7 line-space wheel, etaconnecting train be' tween 'themI `:comprisin'g a gearr 'axle having alinger' wheel for operating?, said scroll, the latter havingl ajpinion.The combination with a platen and a line-space wheel, of a connectingtrain between them, comprising a gear, a scrollengaging said gear, andmeans' for rotating said scroll to effect relative rotation betvi'eernbeing in the form of a crown gear, and' said scroll inclined tothe axisof the platen to clear the teethl of the gear where' necessary.

21. The combination with a platen and a line-space wheel, of aconnecting train between. them comprising a gear, a scroll engaging saidgear, and a shaft or axle having 'a finger wheel for operating saidscroll, saidscroll having a pinion to mesh with a 'pinion on said shaftor axle, said gear being inthe form of la crown gear, ,and said scrollinclined to the axis of the platen to clear the teeth of the gear wherenecessary.

22.'The combination with a platen and a tween them, comprising a gear, ascroll en'- gaging said gear, and means for rotating said scroll toeii'ect relative rotation between the platen and line-space wheel, saidscroll journaled eccentrically to theaxis of the platen and inclined tolsaid axis to clear said gear where necessary.

23. The combination with a platen Vand a line-space wheel, of a notchedor toothed wheel, gearing to connect. the notched Wheel in such a mannerthat many revolutions of the notched wheel will eiect only a singlerelative revolution between the pieten and the line-space wheel, andmeans reieasably #interlocking with said notched wheel to lock theAplaten to the line-space wheel, whereby the platen may be positivelyre-connected to the linespa'ce wheel at intervals much therewithtofneleasably connect said shaft or' axle, to enable the line-spacewheel and platen to revolve as a unit.

c' JUL'iUs x. LUX.

Witnesses K. FnANxr-ORT, C. RIPLEY.

mesh withv a pinion von said shaft. or axle.l if* `the platen andline-space wheel, said-geen' v aconvolute scroll engaging said gear, an`ai. shaft or 5.

line-space wheel, of a connecting train bemore-minute than the intervalsatjwhich the finger wheel for operating said scroll, a notched wheel,and a tooth coperating,

ve cents each, by addressing the Qommissioner of Patents, 1 Washington,D. C.

